google-bigquery - BigQuery 表通配符函数别名？

Question

根据文档here ，我应该能够引用表通配符函数作为别名:

...
FROM
  [project_name:]datasetId.tableId |
  (subselect_clause) |
  table wildcard function
[[AS] alias]
...

但是，当我尝试这样做时，事情失败了:

bq query "SELECT * FROM TABLE_QUERY(my_data, \"TIMESTAMP(table_id) BETWEEN TIMESTAMP('2014-05-21') AND TIMESTAMP('2014-06-10')\") AS blah WHERE blah.foo = 5 LIMIT 30"
Waiting on bqjob_some_id ... (0s) Current status: DONE
BigQuery error in query operation: Error processing job 'some_id': Field 'blah.foo' not found in table 'mydata.20140521'; did you mean 'foo2'?

我想对通配符函数返回的数据进行联接，将其视为单个表，因此别名对我来说非常重要。有想法吗？

Answer 1

您链接到的页面确实提到“不要将别名与表通配符函数一起使用。”

你可能想尝试

SELECT * 
FROM (SELECT * FROM TABLE_QUERY(--insert query here--)) AS blah 
WHERE blah.foo = 5 LIMIT 30"